CN105799658A - Washer injector - Google Patents

Abstract

An object of the present invention is to provide a washer injector capable of injecting an amount of washer fluid which can properly wipe a windshield glass even when viscosity is increased or decreased depending on temperature change of the washer fluid. The washer injector includes a washer nozzle (13) for injecting the washer fluid to the windshield glass (2) of a vehicle (1), a washer pump (16) for supplying the washer fluid to the washer nozzle (13), a fluid temperature sensor (41) as a detection unit for detecting a fluid temperature which is a temperature of the washer fluid, and a control unit (19) for controlling a discharge pressure of the washer pump (16). The control unit (19) is configured to control the discharge pressure of the washer pump (16) to be higher when the fluid temperature (T) detected by the fluid temperature sensor (41) is low than when the fluid temperature is high.

Description

Clean injection apparatus

Technical field

The present invention relates to the cleaning injection apparatus of glass for vehicle window jet cleaning liquid to vehicle.

Background technology

As the device to the glass for vehicle window jet cleaning liquid of vehicle, the device that existing patent documentation 1 and 2 is recorded.In the device of patent documentation 1, it is provided with the temperature sensor of the surface temperature of detection glass for vehicle window, the injection action of cleanout fluid time below the solidification point that detection temperature is cleanout fluid of temperature sensor, can be automatically stopped.By this structure, under the cold conditions that cleanout fluid is below solidification point, even if driver is carried out the spraying of liquid, cleanout fluid is without injection.Thereby, it is possible to prevent cleanout fluid to be frozen on glass for vehicle window to hinder the visual field of driver.

In the device of patent documentation 2, Wiper arm is provided with washer jet, and makes Wiper arm with arc-shaped reciprocating action by wiper motor.Now, when Wiper arm shows action only to removing journey side injection cleanout fluid, and only cleanout fluid is penetrated to backhaul side spray when swinging back action.Thereby, it is possible to the ground, the visual field not interfering with driver cleans wiping surface well, and also it is carried out swimmingly with wiper motor can not being applied multi-load.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Patent Publication 1-16686 publication

Patent documentation 2: Japanese Patent Publication 6-27482 publication

But, in the device of patent documentation 1, become below solidification point and do not freeze cleanout fluid even if employing cleanout fluid without what freeze.In this case, do not freeze cleanout fluid and namely become below solidification point without freezing.But, below solidification point, owing to the injection action of cleanout fluid can be automatically stopped, even if so carrying out above-mentioned spraying, cleanout fluid is without injection, and thus, the cleanout fluid that do not freeze that originally can use also becomes to use.

More becoming low temperature owing to not freezing cleanout fluid, the kinematic viscosity of cleanout fluid more rises, so cleanout fluid becomes be difficult to flow between the stream of washer jet from cleaning pump.Now, if the discharge pressure cleaning pump remains unchanged, then what the cleanout fluid from washer jet injection can occur measures minimizing and the unfavorable condition of wiping properties reduction.Consider this unfavorable condition, although it is also contemplated that from the beginning discharge pressure to be set to height, but in this case, owing to viscosity is to reduce in the process that temperature rises with exceeding solidification point, so can jet cleaning liquid too much, the consumption of cleanout fluid can become superfluous.

It addition, in the device of patent documentation 2, owing to being provided with washer jet on Wiper arm, so the height of washer jet is different because of the arc operation of Wiper arm.Such as, compared with the situation that Wiper arm is level, when relative to the plumbness of level, the height of washer jet becomes higher (washer jet 13 with reference to Figure 22).Now, if the discharge pressure cleaning pump is identical, then compared with when being level with arm, when arm is plumbness, nozzle location becomes higher, and thus the emitted dose of cleanout fluid tails off.

It is to say, owing to the emitted dose of cleanout fluid is different according to the height of nozzle, so there is the problem that not enough (excessive or not enough) occurred relative to target injection amount.When emitted dose deficiency, for instance the spatter property of front screen can be made to worsen, and when emitted dose is excessive, for instance in cleaning fluid tank, the minimizing of cleanout fluid can accelerate.

Summary of the invention

The present invention proposes in view of the foregoing, to provide for the purpose of a kind of cleaning injection apparatus, even if the viscosity of this cleaning injection apparatus cleanout fluid according to the variations in temperature of cleanout fluid and rise or fall, it is also possible to injection can the cleanout fluid of the suitable emitted dose of wiping glass for vehicle window.

It addition, the present invention is to provide for the purpose of a kind of cleaning injection apparatus, the height and position of the washer jet no matter this cleaning injection apparatus is located on Wiper arm how, can both spray the cleanout fluid of ormal weight.

As being used for solving the mode of above-mentioned problem, the invention of technical scheme 1 provides one to clean injection apparatus, it is characterised in that possess: to the washer jet of the glass for vehicle window jet cleaning liquid of vehicle；The cleaning pump of cleanout fluid is supplied to described washer jet；Detect the temperature of described cleanout fluid and the testing agency of liquid temperature；With the controlling organization of the discharge pressure controlling described cleaning pump, described controlling organization controls the discharge pressure of described cleaning pump so that compared with during with the liquid temperature height detected by described testing agency, the discharge pressure of described cleaning pump when making liquid temperature low uprises.

By this structure, even if cleanout fluid becomes low temperature and its viscosity is high, but owing to viscosity is more high, the discharge pressure (pump discharge head) cleaning pump just becomes more high, so also being able to spray the cleanout fluid for the amount needed for the suitable wiping of glass for vehicle window (glass).In other words, it is possible to prevent the reduction of wiping properties.

It addition, when the temperature of cleanout fluid is high and viscosity is low, it is possible to pump discharge head is controlled low.When carrying out this control, although pump discharge head is low and output reduces, but owing to viscosity is low and cleanout fluid easily flows, thus compared with when low temperature output become many.Thus, even if reducing pump discharge head, it is also possible to spray the cleanout fluid for the amount needed for suitable wiping, but also the wasteness consumption of cleanout fluid can be suppressed.

Even if it is to say, the viscosity of cleanout fluid rises or falls according to its variations in temperature, it is also possible to will not spray in the way of superfluous injection by cleanout fluid can the cleanout fluid of the suitable emitted dose of wiping glass for vehicle window.

The invention of technical scheme 2 is characterised by, in technical scheme 1, when described liquid temperature becomes below predetermined threshold temperature, described controlling organization discharge pressure when liquid temperature described in the discharge pressure ratio making described cleaning pump is in a ratio of high temperature with described threshold temperature is controlled in the way of increasing.

By this structure, it is possible to obtain following action effect.Such as, threshold temperature being set as following temperature, this temperature is below freezing and cannot be set to by cleanout fluid can the emitted dose (such as-5 DEG C) of suitable wiping.Now, if the temperature of cleanout fluid becomes less than-5 DEG C, then clean the discharge pressure of pump with the temperature of cleanout fluid higher than-5 DEG C when discharge pressure compared with uprise, it is possible to making cleanout fluid increase to can the emitted dose of suitable wiping.Such that make cleanout fluid become low temperature below freezing, also can pass through simple control to make cleanout fluid to increase to can the emitted dose of suitable wiping.

The invention of technical scheme 3 provides one to clean injection apparatus, it is characterised in that possess: to the washer jet of the glass for vehicle window jet cleaning liquid of vehicle；The cleaning pump of cleanout fluid is supplied to described washer jet；Obtain mechanism, its obtain the temperature of electromotor in the engine room of external air temperature of described vehicle, described vehicle and engine temperature and from cleaning fluid tank to the neighbouring temperature of the stream of described washer jet arbitrary temperature；With the controlling organization of the discharge pressure controlling described cleaning pump, described controlling organization controls the discharge pressure of described cleaning pump so that compared with during by the described temperature height obtaining mechanism's acquirement, the discharge pressure of described cleaning pump when making temperature low uprises.

By this structure, it is possible to obtain following action effect.Even if the engine temperature in the external air temperature of vehicle, engine room and from cleaning fluid tank to the neighbouring temperature of the stream of washer jet arbitrary temperature become low temperature, and the liquid temperature of cleanout fluid therewith also declines, its viscosity raises, but owing to viscosity is more high, pump discharge head just becomes more high, so also being able to spray the cleanout fluid of the amount needed for suitable cleaning glass window.In other words, it is possible to prevent the reduction of wiping properties.

The invention of technical scheme 4 is characterised by, in technical scheme 3, described acquirement mechanism obtains described external air temperature, when the external air temperature of described acquirement becomes below specific external air temperature set in advance, described controlling organization discharge pressure when external air temperature described in the discharge pressure ratio making described cleaning pump is in a ratio of high temperature with described specific external air temperature is controlled in the way of increasing.

By this structure, owing to discharge pressure when pump discharge head is in a ratio of high temperature than external air temperature and described specific external air temperature increases, it is possible to injection can the cleanout fluid of the suitable emitted dose of cleaning glass window.It addition, as obtaining mechanism, utilize the detection sensor of the external air temperature used when air-conditioning etc. is controlled mounted on a vehicle in advance, therefore, correspondingly can seek cost and reduce.

The invention of technical scheme 5 is characterised by, in technical scheme 4, described acquirement mechanism obtains described external air temperature and described engine temperature, when the external air temperature of described acquirement become the engine temperature of below described specific external air temperature and described acquirement be more than specific engines temperature set in advance time, be controlled in the way of the discharge pressure reduction when engine temperature described in the discharge pressure ratio making described cleaning pump and described specific engines temperature are in a ratio of low temperature of the described controlling organization.

By this structure, when the external air temperature of vehicle is low but engine temperature is high, owing to the cleanout fluid in the cleaning fluid tank in engine room is risen again and viscosity, so cleanout fluid becomes easily to flow in stream.In this case, if reducing pump discharge head, then owing to emitted dose can reduce when not damaging the suitable wiping of glass, it is possible to suppress the wasteness consumption of cleanout fluid.It addition, as obtaining mechanism, utilize the detection sensor of detection sensor or engine water temperature, engine oil temperature, the gearbox oil temperature etc. of engine temperature mounted on a vehicle in advance, reduce therefore, it is possible to correspondingly seek cost.

The invention of technical scheme 6 is characterised by, in technical scheme 4, described acquirement mechanism obtains described external air temperature and described neighbouring temperature, when the external air temperature of described acquirement become the neighbouring temperature of below described specific external air temperature and described acquirement be set in advance specific near more than temperature time, described controlling organization near described in the discharge pressure ratio making described cleaning pump temperature with described specific near temperature be in a ratio of low temperature time discharge pressure reduction in the way of be controlled.

By this structure, when the external air temperature of vehicle is low but near the stream of cleanout fluid, temperature is high, due to cleanout fluid rise again and viscosity and become easy flowing, if so reduce pump discharge head, then emitted dose can reduce when not damaging the suitable wiping of glass.Thereby, it is possible to suppress the wasteness consumption of cleanout fluid.

The invention of technical scheme 7 is characterised by, in any one of technical scheme 1～6, it is also equipped with detecting the composition detection mechanism of the composition comprised in described cleanout fluid, the described controlling organization corresponding relation according to liquid temperature and the viscosity of the cleanout fluid comprising the composition detected by described composition detection mechanism, try to achieve the viscosity of the cleanout fluid corresponding with the liquid temperature detected when this detection, when for this viscosity tried to achieve, the discharge pressure of pump is cleaned described in correction in the way of making the discharge pressure of described cleaning pump become can to discharge the discharge pressure of the cleanout fluid to the amount needed for the suitable wiping of described glass for vehicle window.

By this structure, due to the composition according to cleanout fluid, the rate of change risen or fallen of the kinematic viscosity during variations in temperature of cleanout fluid can change, so by pump discharge head being modified according to its composition, it is possible to pump discharge head is arranged to spray the pump discharge head of the cleanout fluid being more suitable for wiping.

The invention of technical scheme 8 provides one to clean injection apparatus, it is characterised in that possess: the Wiper blade of the glass for vehicle window that wiping is located on vehicle；Support the Wiper arm of described Wiper blade；Including the driving mechanism of motor, this motor makes the displacement at least in the vertical direction of described Wiper arm；Washer jet to described glass for vehicle window jet cleaning liquid；The cleaning pump of cleanout fluid is supplied to described washer jet；Controlling organization with the discharge pressure controlling described cleaning pump, described washer jet is located on described Wiper blade or described Wiper arm, described controlling organization controls the discharge pressure of described cleaning pump, making compared with when the position of described Wiper arm is low, the discharge pressure of described cleaning pump when making position height uprises.

By this structure, the height of washer jet (nozzle) is more high, it is possible to make the discharge pressure of cleaning pump (pump) become more high.Therefore, the height and position of the washer jet no matter being located on Wiper arm (arm) how, can both spray the cleanout fluid of ormal weight.Thus, even if nozzle is on high position, it is also possible to make the wiping effect of glass uprise.As long as it addition, make the discharge pressure of pump more high and become more high along with the height of nozzle, it becomes possible to avoid the minimizing of cleanout fluid or the increase that cause because of the high and low position of nozzle.Thereby, it is possible to suppress or prevent the wiping properties reduction of glass and the wasteness consumption of cleanout fluid.

The invention of technical scheme 9 is characterised by, in technical scheme 8, when being controlled in the way of uprising when described controlling organization is lower than the position of described Wiper arm in time making the discharge pressure of the described cleaning pump position height at described Wiper arm, described controlling organization with on the equidirectional of the reciprocating action of described Wiper arm, makes the mode that the emitted dose of the described cleanout fluid ejected from described washer jet becomes fixed amount be controlled.

By this structure, no matter the height of nozzle how, the emitted dose of cleanout fluid can be set to fixed amount.Thus, as long as the fixed amount of the emitted dose of cleanout fluid being set as the amount that the wiping that can make glass carries out the most rightly with necessary Min., it becomes possible to improve the wiping properties of glass, suppress simultaneously or prevent the wasteness consumption of cleanout fluid further.

The invention of technical scheme 10 is characterised by, in technical scheme 8, described washer jet possess carry out when described Wiper arm shows action spraying remove journey side nozzle and carry out the backhaul side nozzle sprayed when described Wiper arm swings back action, described controlling organization is controlled in the way of uprising in time making the discharge pressure of described cleaning pump swing back action when described Wiper arm shows action than described Wiper arm.

By this structure, although being make cleanout fluid spray towards top when Wiper arm shows action, but uprise compared with when the discharge pressure of pump can be made with Wiper arm to swing back action, it is possible in the appropriate location that the wiping properties of glass will not be made to reduce, spray the cleanout fluid of suitable emitted dose.Thus, it also is able to improve the wiping effect of glass when arm shows action.Although it addition, discharge pressure when swinging back action step-down compared with when showing action, but owing to being spray towards lower section, it is possible in the position avoiding wiping properties to reduce, spray the cleanout fluid to the amount needed for wiping.Therefore, it is possible to suppress or the reduction of wiping properties and the wasteness consumption of cleanout fluid when swinging back action when preventing from showing action.

The invention of technical scheme 11 is characterised by, in any one of technical scheme 8～10, be also equipped with detecting the testing agency of the viscosity of described cleanout fluid, described controlling organization by make the discharge pressure of described cleaning pump when the viscosity height detected by described testing agency lower than this viscosity time uprise in the way of be controlled.

By this structure, it is possible to be set to the discharge pressure of the best according to the height of the viscosity of cleanout fluid.That is, when the viscosity height of cleanout fluid, although cleanout fluid is difficult to flow, but by uprising the discharge pressure of pump, it is possible to glass jet cleaning liquid in appropriate amount.Thereby, it is possible to suppress or prevent the reduction of wiping properties.On the other hand, when the viscosity of cleanout fluid is low, even if the discharge pressure of pump is low, cleanout fluid also can flow to nozzle from cleaning fluid tank rightly and spray.Therefore, when the viscosity of cleanout fluid is low, by reducing the discharge pressure of pump, it is possible to suppress or prevent the wasteness consumption of cleanout fluid, further, additionally it is possible to suppress the driving electric of pump.

The invention of technical scheme 12 is characterised by, in any one of technical scheme 8～11, the position of the described controlling organization described Wiper arm before the cleanout fluid ejected from described washer jet will fly out to the outside of described glass for vehicle window, is controlled in the way of making the discharge pressure of described cleaning pump gradually decrease.

By this structure, it is possible to suppress the waste that flies out to the outside of glass of cleanout fluid, suitably cleaning glass window simultaneously.

The invention of technical scheme 13 is characterised by, in any one of technical scheme 8～12, described controlling organization controls the discharge pressure of described cleaning pump in the way of the start position of reciprocating action making the cleanout fluid ejected from described washer jet and resting on described Wiper arm and final position.

By this structure, it is possible to suppress the waste of cleanout fluid.

Invention effect

By the cleaning injection apparatus of the present invention, even if the viscosity of cleanout fluid rises or falls according to the variations in temperature of cleanout fluid, it is also possible to injection can the cleanout fluid of the suitable emitted dose of wiping glass for vehicle window.It addition, the height and position of the washer jet no matter being located on Wiper arm how, can both spray the cleanout fluid of ormal weight.

Accompanying drawing explanation

Fig. 1 is the use of the axonometric chart of the vehicle cleaning injection apparatus of first embodiment of the present invention.

Fig. 2 indicates that the block diagram of the structure in the control portion cleaning injection apparatus of the first embodiment.

Fig. 3 indicates that the liquid temperature-discharge pressure correspondence mappings figure of the relation of the liquid temperature T and pump discharge head P of cleanout fluid.

(a) of Fig. 4 indicates that (b) of the liquid temperature of the liquid temperature T of cleanout fluid and the relation of viscosities il-viscosity correspondence mappings figure, Fig. 4 indicates that the viscosity-discharge pressure correspondence mappings figure of the viscosities il of cleanout fluid and the relation of pump discharge head P.

Fig. 5 is an illustration for the flow chart to the control that the discharge pressure cleaning pump carries out of the control portion by the cleaning injection apparatus of the first embodiment.

Fig. 6 indicates that the figure, liquid temperature T of the relation of the liquid temperature T and pump discharge head P of the variation 1 of the first embodiment illustrates the threshold temperature T0 controlling pump discharge head P.

Fig. 7 indicates that the axonometric chart of the structure of the vehicle being further provided with composition detection sensor on cleaning fluid tank of the variation 2 of the first embodiment.

Fig. 8 indicates that the block diagram of the structure in the control portion cleaning injection apparatus of the variation 2 of the first embodiment.

Fig. 9 indicates that the liquid temperature-viscosity correspondence mappings figure of the relation of the liquid temperature T and kinematic viscosity η v of the cleanout fluid of the variation 2 of the first embodiment.

Figure 10 indicates that the viscosity-discharge pressure correspondence mappings figure of the relation of the kinematic viscosity η v and pump discharge head P of the cleanout fluid of the variation 2 of the first embodiment.

Figure 11 is the use of the axonometric chart of the vehicle cleaning injection apparatus of second embodiment of the present invention.

Figure 12 indicates that the block diagram of the structure in the control portion cleaning injection apparatus of the second embodiment.

Figure 13 indicates that the figure of the relation of the external air temperature To of the second embodiment and the liquid temperature T of cleanout fluid.

Figure 14 indicates that the figure, external air temperature To of the relation of the external air temperature To and pump discharge head P of the second embodiment illustrates the specific external air temperature To1 controlling pump discharge head P.

Figure 15 is the use of the axonometric chart of the vehicle cleaning injection apparatus of the variation 1 of the second embodiment.

Figure 16 indicates that the block diagram of the structure in the control portion cleaning injection apparatus of the variation 1 of the second embodiment.

Figure 17 indicates that the figure, engine temperature Te of the relation of the engine temperature Te and pump discharge head P of the variation 1 of the second embodiment illustrates the specific engines temperature Te1 controlling pump discharge head P.

Figure 18 is the use of the axonometric chart of the vehicle cleaning injection apparatus of the variation 2 of the second embodiment.

Figure 19 indicates that the block diagram of the structure in the control portion cleaning injection apparatus of the variation 2 of the second embodiment.

Figure 20 indicates that the figure of the relation of temperature Tn and pump discharge head P near the stream of the variation 2 of the second embodiment, and near stream, temperature Tn illustrates temperature Tn1 near the specific stream controlling pump discharge head P.

Figure 21 is the use of the axonometric chart of the vehicle cleaning injection apparatus of the 3rd embodiment of the present invention.

(a) of Figure 22 indicates that (b) of figure, Figure 22 of Wiper arm when showing action on front screen, Wiper blade and washer jet indicates that the figure of Wiper arm when swinging back action on front screen, Wiper blade and washer jet.

Figure 23 indicates that the block diagram of the structure in the control portion cleaning injection apparatus of the 3rd embodiment.

Figure 24 indicates that the angle-height correspondence mappings figure of arm angle, θ and the relation of nozzle height H.

Figure 25 indicates that the height-discharge pressure correspondence mappings figure of the relation of nozzle height H and pump discharge head P.

Figure 26 is an illustration for the flow chart to the control that the discharge pressure cleaning pump carries out of the control portion by the cleaning injection apparatus of the 3rd embodiment.

Figure 27 indicates that the block diagram in the control portion cleaning injection apparatus of the 4th embodiment of the present invention.

Height-discharge pressure correspondence mappings the figure of the relation of nozzle height H and pump discharge head P when Figure 28 indicates that when the Wiper arm of the 4th embodiment shows action and swings back action.

Figure 29 is an illustration for the flow chart to the control that the discharge pressure cleaning pump carries out of the control portion by the cleaning injection apparatus of the 4th embodiment.

Figure 30 is the use of the axonometric chart of the vehicle cleaning injection apparatus of the 5th embodiment of the present invention.

Figure 31 indicates that the block diagram in the control portion cleaning injection apparatus of the 5th embodiment of the present invention.

Figure 32 indicates that the viscosity-correction value correspondence mappings figure of the viscosities il of the cleanout fluid of the 5th embodiment and the relation of correction value α.

Figure 33 indicates that the figure from start position T10 position T13 to terminal when reciprocating action of the Wiper arm on the front screen of variation 4.

Description of reference numerals

null1-vehicle，2-front screen (glass for vehicle window)，4-electromotor，4a-engine room，10、10A、10B、10C-cleans injection apparatus，11-Wiper arm，12-Wiper blade，13-washer jet，13a-removes journey side nozzle，13b-backhaul side nozzle，13c-injection direction switching part，14-wiper motor (motor of driving mechanism)，14a-rotational angle detecting sensor，15-cleaning fluid tank，16-cleans pump，17-viscosity measurements sensor，18-manages，19、19A、19B、19C、19D-control portion (controlling organization)，21-motor control part，22-nozzle height test section，23、23B、23C、23D、23E、23F-pump control portion，23a-maintaining part，41-liquid temperature detection sensor (testing agency)，42-external air temperature detection sensor (obtaining mechanism)，Temperature detection sensor (obtaining mechanism) near 43-stream，44-engine temperature detection sensor (obtaining mechanism).

Detailed description of the invention

With reference to Fig. 1～Figure 33, embodiments of the present invention are specifically described.In explanation, for the same accompanying drawing labelling of same key element labelling, and the repetitive description thereof will be omitted.It addition, when direction, based on observe from the driver (not shown) of vehicle all around go up under illustrate.

<structure of the first embodiment>

Fig. 1 is the use of the axonometric chart of the vehicle cleaning injection apparatus of first embodiment of the present invention.

As it is shown in figure 1, the injection apparatus 10 that cleans of vehicle 1 possesses Wiper arm 11, Wiper blade 12, washer jet 13, wiper motor 14, cleaning fluid tank 15, cleans pump 16, connects and clean pump 16 and the pipe 18 of washer jet 13, control portion (controlling organization) 19 and liquid temperature detection sensor (testing agency) 41.

In addition, it may have following situation: by Wiper arm 11 referred to as arm 11, by Wiper blade 12 referred to as sheet 12, by washer jet 13 referred to as nozzle 13, by wiper motor 14 referred to as motor 14, by cleaning fluid tank 15 referred to as case 15, pump 16 will be cleaned referred to as pump 16.

Wiper motor 14 can be suitable for brushless motor etc., and the hood 3 of its front screen 2 front side being arranged in vehicle 1 is internal.This wiper motor 14 drives arm 11 so that arm 11 centered by the axle of the vehicle fore-and-aft direction of rearward end (the being called arm rearward end) 11a of Wiper arm 11 with arc-shaped reciprocating action.Front screen 2 is the glass for vehicle window described in technical scheme, it is also possible to be only called glass 2.

Wiper arm 11 is in bar-shaped, it is arranged on geared linkage mechanism etc., transversely being arranged in the outer surface of glass 2 from arm rearward end 11a with the bar-like portion that linearity extends, this geared linkage mechanism etc. is located on the cowl upper (cowltop) near the right forward side of glass 2.It addition, in the leading section of Wiper arm 11, be provided with washer jet 13.

The axle of the axle of arm rearward end 11a and wiper motor 14 assembles via not shown geared linkage mechanism etc..Such as, the package assembly of wiper motor 14 and arm rearward end 11a is although not shown, constitute it is known that ground is following: built-up gear linkage on motor 14, then the connecting rod (not shown) worked by geared linkage mechanism is set, and on this connecting rod, link Wiper arm 11, make arm 11 with arc-shaped reciprocating action.If it addition, motor 14 is stepper motor, then the axle of motor 14 can also be made to combine with the axle of arm rearward end 11a via joint elements etc..

Wiper blade 12 is the narrower elongate in shape formed by elastomeric material elastomeric material.The middle part lease making of the elongate in shape of this sheet 12 is arranged on the leading section of Wiper arm 11 by washer jet 13.The installment state of this sheet 12 is along the length direction of arm 11.Additionally, sheet 12 with according to motor 14 rotate drive and with the arm 11 of arc-shaped reciprocating action together, repeat following reciprocating action, this reciprocating action is, from shown in Fig. 1 substantially horizontal to figure left side carry out showing action with arc-shaped, become substantially vertical state (not shown) relative to level, afterwards, carry out swinging back action with arc-shaped to figure right side, revert to approximate horizontal state.Now, washer jet 13 also integrally performs reciprocating action.

Washer jet 13 is fixed on the leading section of Wiper arm 11, to glass 2 jet cleaning liquid.This nozzle 13 has journey side nozzle 13a and backhaul side nozzle 13b.Go journey side nozzle 13a arm 11 to when going journey side shifting towards removing journey side shifting direction jet cleaning liquid.Backhaul side nozzle 13b when to backhaul side shifting towards backhaul side shifting direction jet cleaning liquid.The switching of this injection direction is undertaken by control portion 19 (with reference to Fig. 2) as described later.

Cleaning fluid tank 15 is the chest storing cleanout fluid formed by materials such as resins, on the lower position of the right side wall being arranged in the engine room 4a being configured with electromotor 4.On case 15, it is provided with liquid temperature detection sensor 41.

The temperature of the cleanout fluid in liquid temperature detection sensor 41 detection case 15 and liquid temperature T [DEG C], and this liquid temperature detected is exported to control portion 19.But, although in FIG in order to make it easy to understand, arrange in the way of the liquid temperature T of the liquid temperature detection sensor 41 cleanout fluid in detection case 15, but it is not limited to this.Namely, it is also possible to for, liquid temperature detection sensor 41 by outside case 15, detect from the outlet of case 15 via the liquid temperature T pipe 18 to nozzle 13 in the way of arrange.Can also be such as, when the circulation not interfering with cleanout fluid, liquid temperature is detected the detector unit of sensor 41 and internally interts from the perisporium of pipe 18 and detect liquid temperature T.

Cleaning pump 16 is the drive source for making the cleanout fluid in case 15 spray from nozzle 13 via pipe 18.This cleaning pump 16 is the pump (not shown) for making cleanout fluid spray and the electric pump mechanism for making the motor (not shown) that the impeller (not shown) of this pump rotates be integrally forming, and is arranged in the lower surface of case 15.

Pipe 18 is formed by vinyl or plastic material etc., connects pump 16 and nozzle 13, is the stream supplied to nozzle 13 by the cleanout fluid discharged from pump 16.As one part shown in Fig. 2, this pipe 18 in the not shown cavity of Wiper arm 11 by and be connected with nozzle 13.

Control portion 19 shown in Fig. 1 and Fig. 2 controls wiper motor 14 and cleans the action of pump 16, possesses motor control part 21 and pump control portion 23.

In addition, although not shown, but control portion 19 is configured to, possessing the storage devices etc. such as such as CPU (CentralProcessingUnit, central processing unit), ROM (ReadOnlyMemory, read only memory), RAM (RandomAccessMemory, random access memory), hard disk, these elements are connected by bus in the way of can transmitting information.

As usual control, motor control part 21 the rain brush being configured at vehicle 1 indoor switch 31 for ON (opening) time according to motor control signal, wiper motor 14 rotated driving, and make wiper motor 14 stop when this switch is OFF (cut out).Additionally, the direction of rotation of the rotating shaft of motor 14 is switched to according to motor control signal and rotates forward and reversely rotate by motor control part 21, so that Wiper arm 11 reciprocating action, now, by increasing and decreasing the electric current flowing to motor 14, and speed generation speed during reciprocating action is made to change.When motor 14 rotates forward, arm 11 is to going journey side shifting, and when motor 14 reversely rotates, arm 11 is to backhaul side shifting.

The reciprocating action of this arm 11 also can carry out when cleaning switch 32 is set to ON.That is, when rain brush switch 31 is OFF state, when cleaning switch 32 is set to ON, the control of the pump control signal by exporting from pump control portion 23, pump 16 sucks cleanout fluid from case 15 and discharges.This cleanout fluid being discharged sprays from nozzle 13 via pipe 18.While this injection, by wiper motor 14, arm 11 back and forth being driven, Wiper blade 12 carries out the reciprocating action of stipulated number (such as three times) at the upper surface of glass 2.So, for instance jet cleaning liquid in three reciprocating actions of arm 11.It addition, when rain brush switch 31 is ON state, when cleaning switch 32 is set to ON, the nozzle 13 jet cleaning liquid from reciprocating action in the stipulated time.

Motor control signal from motor control part 21 also exports to the injection direction switching part 13c being located within nozzle 13.

Injection direction switching part 13c is when the motor control signal inputted is for rotating forward control signal, to make the cleanout fluid flowed along the direction shown in arrow Y1 in pipe 18 such as carry out the switching of stream in the way of going journey side nozzle 13a injection shown in arrow Y1a.Otherwise, when motor control signal is reversely rotate control signal, in the way of making cleanout fluid such as spray shown in arrow Y1b, carry out the switching of stream from backhaul side nozzle 13b.

By being switched the injection direction of cleanout fluid in this wise by injection direction switching part 13c, and when arm 11 is to when going journey side shifting, from removing journey side nozzle 13a jet cleaning liquid as shown in arrow Y1a, and when arm 11 is to backhaul side shifting, from backhaul side nozzle 13b jet cleaning liquid as shown in arrow Y1b.

Pump control portion 23 has the maintaining part 23a table information D1 (can also be only called table information D1) corresponding to the liquid temperature-discharge pressure being stored in not shown storing mechanism that the storing mechanism freely being read and write data by RAM or flash memory etc. is constituted.This pump control portion 23 according to pump control signal to pump 16 draw discharging operation and discharge pressure now is controlled so that the cleanout fluid in case 15 is discharged by pump 16 to pipe 18.

Pump control signal is such as PWM (PulseWidthModulation, pulse width modulation) control signal.By changing the dutycycle of this pwm control signal, and the element of pump 16 and the rotating speed of motor (not shown) are carried out variable control, and the discharge pressure (pump discharge head P) of pump 16 can be made variable.When pump discharge head P increases, the dutycycle of pwm control signal increases, and when pump discharge head P reduces, dutycycle reduces.

Further, the liquid temperature T by the cleanout fluid in liquid temperature detection this case 15 detected of sensor 41 suitable in liquid temperature described later-discharge pressure correspondence table information D1, is tried to achieve the pump discharge head P that the liquid temperature T-phase detected with this associates by pump control portion 23.Then, pump 16 is controlled as this pump discharge head P tried to achieve.When carrying out this control, the liquid temperature T this detected updates as liquid temperature Tq last time and is maintained in maintaining part 23a.

This table information D1 relation of the liquid temperature T shown in data value table diagram 3 Yu pump discharge head P.

Fig. 3 is the liquid temperature-discharge pressure correspondence mappings figure of the corresponding relation representing liquid temperature T and pump discharge head P with diagram curve G1, wherein, transverse axis illustrates liquid temperature T with-T4 (low temperature side temperature)～T4 (high temperature side temperature), and with P1 (minimum discharge pressure)～P1m (MDP), pump discharge head P is shown on the longitudinal axis.Pump discharge head P1～the P1i being associated with each liquid temperature-T4～T4 on diagram curve G1 is following discharge pressure, and it can discharge the cleanout fluid of the emitted dose that front screen 2 can carry out suitable wiping.

It is to say, diagram curve G1 represents that the more low pump discharge head P of liquid temperature T just becomes more high dependency relation.Such as, having when liquid temperature is T0 for pump discharge head is P1e, then becomes the relation of the pump discharge head P1g higher than " P1e " when the liquid temperature-T2 lower than this liquid temperature T0.

The corresponding relation of the liquid temperature T shown in Fig. 3 and pump discharge head P can be derived from the viscosity-discharge pressure correspondence mappings figure shown in (b) of the liquid temperature shown in (a) of Fig. 4-viscosity correspondence mappings figure and Fig. 4.

Mapping graph shown in (a) of Fig. 4 is the figure representing liquid temperature T and the corresponding relation of viscosities il with diagram curve G1a, wherein, transverse axis illustrates liquid temperature T with-T4 (low temperature side temperature)～T4 (high temperature side temperature), and the viscosities il [Pa s (pascal second)] of cleanout fluid is shown with η a (low viscosity side)～η i (high viscosity side) on the longitudinal axis.Detect, with by liquid temperature, corresponding for the liquid temperature T viscosities il that sensor 41 detects with the corresponding relation of viscosities il is tried to achieve from this liquid temperature T.

Mapping graph shown in (b) of Fig. 4 is the figure representing viscosities il and the corresponding relation of pump discharge head P with diagram curve G1b, wherein, transverse axis illustrates viscosities il with η a (low viscosity side)～η i (high viscosity side), and with P1 (minimum discharge pressure)～P1m (MDP), pump discharge head P is shown on the longitudinal axis.The viscosities il tried to achieve from (a) of Fig. 4 as mentioned above is applicable to the viscosities il of (b) of Fig. 4 and the corresponding relation of pump discharge head P, thus trying to achieve the pump discharge head P corresponding with viscosities il.

So, the corresponding relation of the liquid temperature T and pump discharge head P of the mapping graph according to that derive from the mapping graph shown in (a) and (b) of Fig. 4, Fig. 3, try to achieve the pump discharge head P corresponding with the liquid temperature T that this detects.

<action of the first embodiment>

Then, with reference to the flow chart shown in Fig. 5, the control that the discharge pressure cleaning pump 16 is carried out by control portion 19 is described.But in cleaning fluid tank 15, store as cleanout fluid and namely become below solidification point and do not freeze cleanout fluid without what freeze.

In step sl, when rain brush switch 31 is set to ON, wiper motor 14 is alternately switched to rotate forward and reversely rotate while it is rotated driving by motor control part 21 according to motor control signal, so that Wiper arm 11 reciprocating action.Now, the Wiper blade 12 on arm 11 and washer jet 13 also reciprocating action integratedly it are arranged on.Further, cleaning switch 32 is set to ON and pump 16 works and from the situation of nozzle 13 jet cleaning liquid as premise.

In addition, can also using following situation as premise, that is, it is set to ON and from while nozzle 13 jet cleaning liquid at cleaning switch 32, carries out arm 11 back and forth driving by motor 14, sheet 12 carries out reciprocating action and the jet cleaning liquid of stipulated number at the upper surface of glass 2.

In step s 2, detect sensor 41 by liquid temperature and detect the liquid temperature T not freezing cleanout fluid in outlet 15, and export to pump control portion 23.This liquid temperature T detected is set to the such as "-T2 " shown in Fig. 3.

In step s3, pump control portion 23 tries to achieve and the liquid temperature-T2 the detected pump discharge head P being associated from liquid temperature-discharge pressure correspondence table information D1.It is to say, try to achieve the pump discharge head P1g corresponding with liquid temperature-T2 shown in Fig. 3.This pump discharge head P1g is higher than the pump discharge head P1e being associated with the liquid temperature T0 being maintained at present in maintaining part 23a.Pump control portion 23 controls the discharge pressure of pump 16 so that it becomes the pump discharge head P1g tried to achieve.Now, the liquid temperature-T2 detected updated in maintaining part 23a and keep.

In step s 4, pump 16 sucks from case 15 with the pump discharge head P1g that tried to achieve by above-mentioned steps S3 and does not freeze cleanout fluid and discharge to pipe 18.Thus, the amount needed for spraying for suitable wiping from nozzle 13 to front screen 2 do not freeze cleanout fluid.

On the other hand, for instance, when the liquid temperature T detected is higher than the liquid temperature T0 in above-mentioned maintenance liquid temperature T1, the pump discharge head P1d corresponding with liquid temperature T1 tries to achieve from table information D1 in pump control portion 23.Make not freeze cleanout fluid by the pump 16 of this pump discharge head P1d discharge to pipe 18 and spray from nozzle 13.

<effect of the first embodiment>

The cleaning injection apparatus 10 of the first embodiment described above possesses: to the washer jet 13 of the glass for vehicle window of vehicle 1 and front screen 2 jet cleaning liquid；The cleaning pump 16 of cleanout fluid is supplied to washer jet 13；Liquid temperature detection sensor 41 as the testing agency of the temperature and liquid temperature that detect cleanout fluid；Control portion 19 with the discharge pressure controlling cleaning pump 16.And, control portion 19 controls to clean the discharge pressure of pump 16 so that compared with during with the liquid temperature T height detected by liquid temperature detection sensor 41, the discharge pressure cleaning pump 16 when making liquid temperature low uprises.

By this structure, even if cleanout fluid becomes low temperature and its viscosity raises, but owing to viscosity is more high, the discharge pressure (pump discharge head P) cleaning pump 16 just becomes more high, so the cleanout fluid of the amount needed for also spraying for suitable wiping glass for vehicle window (glass).In other words, it is possible to prevent the reduction of wiping properties.

It addition, when the temperature of cleanout fluid is high and viscosity is low, it is possible to pump discharge head P is controlled low.When carrying out this control, although pump discharge head P is low and output reduces, but owing to viscosity is low and cleanout fluid easily flows, thus compared with during with low temperature output become many.Thus, even if reducing pump discharge head, the cleanout fluid of the amount needed for also spraying for suitable wiping, and the wasteness consumption of cleanout fluid can also be suppressed.

Even if it is to say, the viscosities il of cleanout fluid rises or falls according to its variations in temperature, can both spray in the way of will not making the injection of cleanout fluid surplus can the cleanout fluid of the suitable emitted dose of cleaning glass window 2.

<variation 1 of the first embodiment>

Then, the variation 1 of the first embodiment is illustrated.

When maintaining predetermined threshold temperature Th in maintaining part 23a, and by liquid temperature detect the liquid temperature T that detects of sensor 41 become below threshold temperature Th time, the pump control portion 23 discharge pressure in time making pump discharge head P be in a ratio of high temperature than liquid temperature T and threshold temperature Th is controlled in the way of increasing.

Such as, threshold temperature Th is set as the T0 shown in Fig. 6, and this threshold temperature T0 is maintained in maintaining part 23a.Threshold temperature T0 is below freezing, and becomes when low pump discharge head P1e, it is impossible to making cleanout fluid reach can the temperature of the suitable emitted dose of wiping.As shown in Figure 6, pump discharge head P, when the liquid temperature T detected is higher than T0, is controlled at P1e by pump control portion 23.Afterwards, when the liquid temperature T detected becomes below threshold temperature T0, it is controlled in the way of making pump discharge head P become the pump discharge head P1i higher than P1e.Thus, though cleanout fluid become below freezing and cannot make cleanout fluid reach can the low temperature of the suitable emitted dose of wiping, also cleanout fluid can be made to increase to simple control can the emitted dose of suitable wiping.

<variation 2 of the first embodiment>

Then, the variation 2 of the first embodiment is illustrated.

As it is shown in fig. 7, be further provided with composition detection sensor 45 on cleaning fluid tank 15.Composition detection sensor 45 is interspersed with the composition detection element (not shown) of the composition of detection cleanout fluid in case 15, is detected the composition comprised in cleanout fluid by composition detection element, and is exported to control portion 19 by this composition.

It addition, as shown in Figure 8, pump control portion 23B is further equipped with the liquid temperature-viscosity correspondence table information D2 table information D3 corresponding to viscosity-discharge pressure being stored in not shown storing mechanism.Additionally, liquid temperature-viscosity correspondence table information D2 is also referred to as table information D2, viscosity-discharge pressure correspondence table information D3 is also referred to as table information D3.

The table information D2 relation of the liquid temperature T shown in data value table diagram 9 Yu kinematic viscosity η v.Fig. 9 is the liquid temperature-viscosity correspondence mappings figure of the corresponding relation representing liquid temperature T and kinematic viscosity η v with different two diagram curve G2v, G3v, wherein, transverse axis illustrates liquid temperature T with-T5 (low temperature side temperature)～T4 (high temperature side temperature), and the kinematic viscosity η v [m of cleanout fluid is shown with η v0 (low viscosity side)～η v7 (high viscosity side) on the longitudinal axis²/s].Additionally, due to kinematic viscosity is commonly referred to as viscosity, so kinematic viscosity is included in the viscosity described in technical scheme.

Article one, diagram curve G2v represents the corresponding relation of the liquid temperature T and kinematic viscosity η v of the cleanout fluid comprising methanol constituents.Another diagram curve G3v represents the corresponding relation of the liquid temperature T and kinematic viscosity η v of the cleanout fluid comprising ethanol constituents.

The table information D3 relation of the kinematic viscosity η v shown in data value table diagram 10 Yu pump discharge head P.Figure 10 is the viscosity-discharge pressure correspondence mappings figure of the corresponding relation representing kinematic viscosity η v and pump discharge head P with different two diagram curve G2p, G3p, wherein, transverse axis illustrates the kinematic viscosity η v [m of cleanout fluid with η v0 (low viscosity side)～η v7 (high viscosity side)²/ s], and with P1 (minimum discharge pressure)～P1m (MDP), pump discharge head P is shown on the longitudinal axis.The pump discharge head P of this mapping graph becomes the discharge pressure of the cleanout fluid of the amount needed for can discharging for suitable cleaning glass window 2 when this kinematic viscosity η v.

Article one, diagram curve G2p and diagram curve G2v (Fig. 9) is corresponding, and another diagram curve G3p and diagram curve G3v (Fig. 9) is corresponding.

In addition, in the present embodiment, pump control portion 23B keeps table information D2, the D3 in Fig. 9 by the methanol class represented with diagram curve G2p, G3p in diagram curve G2v, G3v, Figure 10 and two kinds of compositions of ethanol class but it also may for keeping the composition of more than three kinds by table information.

Pump control portion 23B is with reference first to table information D2, from the corresponding relation of the liquid temperature T of the cleanout fluid comprising the composition v detected by composition detection sensor 45 and kinematic viscosity η v, try to achieve and the kinematic viscosity η v of corresponding for the liquid temperature T cleanout fluid being detected that sensor 41 detects by liquid temperature.Such as, the cleanout fluid comprising the composition v detected contains alcohol component, and has the corresponding relation of the liquid temperature T represented of diagram curve G3v as shown in Figure 9 and kinematic viscosity η v.In this case, the kinematic viscosity η v of corresponding with the liquid temperature T detected cleanout fluid such as tries to achieve as η v2.

Then, the kinematic viscosity η v2 tried to achieve before suitable in the kinematic viscosity η v represented by the diagram curve G3p (Figure 10) corresponding with the diagram curve G3v of table information D3 (Fig. 9) information with the corresponding relation of pump discharge head P, is tried to achieve the pump discharge head P1g corresponding with this kinematic viscosity η v2 by pump control portion 23B.Then, the discharge pressure of pump 16 is set to this pump discharge head P1g by pump control portion 23B.Thereby, it is possible to the cleanout fluid of the amount needed for spraying for suitable cleaning glass window 2 from nozzle 13.

<structure of the second embodiment>

The axonometric chart of the vehicle cleaning injection apparatus that Figure 11 is the use of in second embodiment of the present invention.The difference cleaning injection apparatus 10 shown in injection apparatus 10A and Fig. 1 of cleaning shown in Figure 11 is in that, do not possess liquid temperature detection sensor 41, and use external air temperature detection sensor (obtaining mechanism) 42 being mounted on vehicle 1 in advance, and control portion 19A possesses the pump control portion 23C with maintaining part 23a as illustrated in fig. 12.

External air temperature detection sensor 42 is the detection sensor of the external air temperature for airconditioning control etc., and detection (acquirement) external air temperature To also exports to pump control portion 23C.

At this, as shown in figure 13, the relation of the liquid temperature T of external air temperature To and cleanout fluid is rise from-To4 towards To4 according to the external air temperature To of transverse axis, the relation that the liquid temperature T of the longitudinal axis also rises in the way of from-T4 towards T4.An example of this relation is represented with diagram curve G4.Additionally, identically with the explanation in the first embodiment, liquid temperature T is in case 15 or from the outlet of case 15 temperature via the cleanout fluid pipe 18 to nozzle 13.

It addition, liquid temperature T is identical with the explanation that (a) with reference to Fig. 4 carries out with the relation of the viscosities il of cleanout fluid.Further, viscosities il is identical with the explanation that (b) with reference to Fig. 4 carries out with the relation of pump discharge head P.

Viscosities il can rise along with the reduction of the liquid temperature T of the cleanout fluid caused because of the reduction of external air temperature To, the cleanout fluid of the amount needed for thus cannot spraying for suitable cleaning glass window 2, specific external air temperature Tos now is remained in maintaining part 23a by pump control portion 23C.Such as, when the external air temperature To detected reduces into-the To1 shown in Figure 13, if liquid temperature T is " T0 ", then as Suo Shi (a) of Fig. 4, viscosities il is " η e ".When this viscosities il e, it is pump discharge head P1e as shown in (b) of Fig. 4.External air temperature-To1 now is set to specific external air temperature Tos=-To1 in advance and remains in maintaining part 23a.

And, when the external air temperature To detected by external air temperature detection sensor 42 becomes specific below the external air temperature Tos being maintained in maintaining part 23a, pump control portion 23C controls pump discharge head P so that uprise compared with being the discharge pressure during high temperature exceeding specific external air temperature Tos with external air temperature To.Such as, as represented shown in Figure 14 of the relation of external air temperature To and pump discharge head P, when the external air temperature To detected becomes specific below external air temperature-To1, control pump discharge head P so that compared with being discharge pressure P1e during specific external air temperature-To1 with external air temperature To, uprise into " P1j ".

<effect of the second embodiment>

By this control, pump discharge head P with cannot suitably cleaning glass window 2 time pump discharge head P2j compared with uprise into " P1j ", therefore, it can injection can the cleanout fluid of the suitable emitted dose of cleaning glass window 2.

Additionally, detect sensor 42 as external air temperature, utilize the detection sensor of the external air temperature used when air-conditioning etc. is controlled being mounted in advance on vehicle 1, therefore, without newly arranging external air temperature detection sensor 42, it is possible to correspondingly seek cost and reduce.

<variation 1 of the second embodiment>

Then, the variation 1 of the second embodiment is illustrated.

The difference cleaning injection apparatus 10 shown in injection apparatus 10A and Figure 11 of cleaning shown in Figure 15 is in that, being further equipped with engine temperature detection sensor (obtaining mechanism) 44, the pump control portion 23C of control portion 19A uses further and is detected the engine temperature Te of (acquirement) to control pump discharge head P by engine temperature detection sensor 44 as illustrated in fig. 16.

Engine temperature detection sensor 44 detects temperature (engine temperature) Te of the electromotor 4 in the engine room 4a being configured with case 15 and exports to pump control portion 23C.

At this, as shown in the relation of the external air temperature To and liquid temperature T of Figure 13, the relation of engine temperature Te and the liquid temperature T of cleanout fluid is, the relation that liquid temperature T also rises according to the rising of engine temperature Te.Even if it is to say, external air temperature To is low, but as long as engine temperature Te is high, liquid temperature T will uprise.

Additionally, as shown in (a) of Fig. 4, the relation of the viscosities il of liquid temperature T and cleanout fluid is, rising according to liquid temperature T and relation that viscosities il declines, therefore, when engine temperature Te height, the cleanout fluid of the case 15 in engine room 4a is risen again and viscosities il step-down, and cleanout fluid becomes easily to flow in stream.

Specific engines temperature Tes when pump control portion 23C is by the viscosity of the cleanout fluid of the amount become when the cleanout fluid in case 15 needed for spraying for suitable cleaning glass window 2 remains in maintaining part 23a in advance.

Further, illustrated by the second embodiment, even if pump control portion 23C also can control as follows when the external air temperature To detected by external air temperature detection sensor 42 becomes specific below external air temperature-To1 (with reference to Figure 14).That is, when the engine temperature Te detected by engine temperature detection sensor 44 is more than specific engines temperature Tes, pump discharge head P is controlled so that it is reduction compared with discharge pressure during with engine temperature Te lower than specific engines temperature Tes.

Such as, in this second embodiment, when the external air temperature To detected becomes specific below external air temperature-To1 as illustrated in fig. 14, pump control portion 23C controls pump discharge head P so that uprise into " P1j " compared with being discharge pressure P1e during specific external air temperature-To1 with external air temperature To.

But, in this variation 1, even if when the external air temperature To detected becomes specific below external air temperature-To1, as shown in figure 17, when the engine temperature Te detected is be maintained at more than the specific engines temperature Te1 in maintaining part 23a in advance, pump control portion 23C is also so that the mode that discharge pressure P1h when pump discharge head P is in a ratio of low temperature than engine temperature Te and specific engines temperature Te1 is reduced to " P1d " is controlled.It is to say, when more than specific engines temperature Te1, due to cleanout fluid rise again and viscosities il step-down and become easy flowing, so carrying out being reduced to pump discharge head P the control of " P1d ".

Following effect is obtained by this control.That is, when the external air temperature of vehicle 1 is low but engine temperature Te is high, the cleanout fluid in case 15 in engine room 4a is risen again and viscosity is low and become easily to flow in stream.Thus, if reducing pump discharge head P, then can reduce emitted dose when not damaging suitable cleaning glass window 2, it is possible to suppress the wasteness consumption of cleanout fluid.

Additionally, sensor 44 is detected as engine temperature, utilize the detection sensor of detection sensor or engine water temperature, engine oil temperature, the gearbox oil temperature etc. of engine temperature mounted on a vehicle in advance, therefore, without newly arranging engine temperature detection sensor 44, it is possible to correspondingly seek cost and reduce.

In this variation 1, when the external air temperature of vehicle 1 is low but during engine temperature Te height, reduce pump discharge head P, but external air temperature can not also be detected, but only detect engine temperature Te, and carry out reducing the control of pump discharge head P etc. according to this engine temperature Te detected.

<variation 2 of the second embodiment>

Then, the variation 2 of the second embodiment is illustrated.

The difference cleaning injection apparatus 10 shown in injection apparatus 10A and Figure 11 of cleaning shown in Figure 18 is in that, being further equipped with temperature detection sensor near stream (obtain mechanism) 43, the pump control portion 23C of control portion 19A uses near the stream detected by temperature detection sensor near stream 43 as illustrated in fig. 19 temperature Tn to control pump discharge head P further.Additionally, temperature Tn is the neighbouring temperature described in technical scheme near stream.

Near stream, temperature detection sensor 43 detects neighbouring temperature (near the stream temperature) Tn of (acquirement) stream from case 15 to nozzle 13 and exports to pump control portion 23C.

At this, as shown in the relation of the external air temperature To and liquid temperature T of Figure 13, near stream, the relation of the liquid temperature T of temperature Tn and cleanout fluid is, the relation that liquid temperature T also rises according to the rising of temperature Tn near stream.

It addition, the relation of the viscosities il of liquid temperature T and cleanout fluid is, the relation as shown in (a) of Fig. 4, therefore, near stream during temperature Tn height, the cleanout fluid in stream rise again and viscosities il step-down and become easily to flow in stream.

Pump control portion 23C maintains temperature Tns near the specific stream when the cleanout fluid in case 15 becomes the viscosity of the cleanout fluid of the amount needed for spraying for suitable cleaning glass window 2.Additionally, temperature Tns is the specific neighbouring temperature described in technical scheme near specific stream.

And, illustrated in the second embodiment, even if pump control portion 23C also can control as follows when the external air temperature To detected by external air temperature detection sensor 42 becomes specific below external air temperature-To1.Namely, when near the stream detected by temperature detection sensor near stream 43, temperature Tn is more than temperature Tns near specific stream, it is controlled in the way of the discharge pressure reduction in time making pump discharge head P than temperature Tn near stream and near specific stream, temperature Tns is in a ratio of low temperature.

Such as, in this second embodiment, when the external air temperature To detected becomes specific below external air temperature-To1 as illustrated in fig. 14, pump control portion 23C controls pump discharge head P so that it is that discharge pressure P1e during specific external air temperature-To1 uprises into " P1j " than external air temperature To.

But, in this variation 2, even if when the external air temperature To detected becomes specific below external air temperature-To1, as shown in figure 20, when near the stream detected, temperature Tn is be maintained at more than temperature Tn1 near the specific stream in maintaining part 23a in advance, pump discharge head P is also controlled by pump control portion 23C so that discharge pressure P1h when it is in a ratio of low temperature than temperature Tn near stream with temperature Tn1 near specific stream reduces into " P1d ".It is to say, near specific stream when more than temperature Tns, due to cleanout fluid rise again and viscosities il step-down and become easy flowing, so carrying out reducing into pump discharge head P the control of " P1d ".

Following effect is obtained by this control.That is, when the external air temperature of vehicle 1 is low but near the stream of cleanout fluid, temperature Tn is high, cleanout fluid rise again and viscosities il step-down and become easy flowing.Thus, if reducing pump discharge head P, then can reduce emitted dose when not damaging the suitable wiping to glass 2, it is possible to suppress the wasteness consumption of cleanout fluid.

In this variation 2, when the external air temperature of vehicle 1 is low but during temperature Tn height near stream, reduce pump discharge head P, but external air temperature can not also be detected, but only detect temperature Tn near stream, and carry out reducing the control of pump discharge head P etc. according to temperature Tn near this stream detected.

<variation 3>

In addition, in the structure of the second embodiment and variation 1,2 thereof, described in the variation 1 of the first embodiment as the aforementioned, it is also possible to be further provided with composition detection sensor 45 (with reference to Fig. 7) on cleaning fluid tank 15.Now, as pump control portion 23B (with reference to Fig. 8), the discharge pressure of pump 16 is modified by pump control portion 23C, to become the discharge pressure (such as " P1g " shown in Figure 10) of the cleanout fluid of the amount needed for can discharging for suitable cleaning glass window 2.By this correction, it is possible to the cleanout fluid of the amount needed for spraying for suitable cleaning glass window 2 from nozzle 13.

<structure of the 3rd embodiment>

The axonometric chart of the vehicle cleaning injection apparatus that Figure 21 is the use of in the 3rd embodiment of the present invention.As shown in figure 21, the injection apparatus 10B that cleans of vehicle 1 possesses as the Wiper arm 11 of the element identical with Fig. 1, Wiper blade 12, washer jet 13, wiper motor 14, cleaning fluid tank 15, cleaning pump 16, connects the pipe 18 cleaning pump 16 with washer jet 13.Further, the rotational angle detecting sensor 14a and control portion (controlling organization) 19B of characteristic element as the 3rd embodiment it are also equipped with.

Rotational angle detecting sensor 14a detects the anglec of rotation of the rotating shaft of wiper motor 14 and exports to control portion 19B.

Although wiper motor 14 is constructed as disclosed above, but it also is able to the motor using the anglecs of rotation such as servo motor variable.Additionally, individually or constituted the driving mechanism described in technical scheme by the combination of motor 14 with geared linkage mechanism, connecting rod etc. by motor 14.

Washer jet 13 has journey side nozzle 13a and backhaul side nozzle 13b, and the switching of the injection direction of nozzle 13a or 13b is undertaken by control portion 19B (with reference to Figure 23) as described later.

Control portion 19B controls wiper motor 14 and cleans the action of pump 16, and constitutes as illustrated in fig. 23.

As shown in figure 23, the composition of control portion 19B includes: motor control part 21；Angle-highly corresponding table information D11 is stored the nozzle height test section 22 in storage part (not shown)；With the pump control portion 23D corresponding for height-discharge pressure table information D12 stored in storage part (not shown).In addition, although not shown, but control portion 19B is also equipped with the storage devices etc. such as such as CPU (CentralProcessingUnit, central processing unit), ROM (ReadOnlyMemory, read only memory), RAM (RandomAccessMemory, random access memory), hard disk, and these elements are connected by bus in the way of can transmitting information.Additionally, angle-highly corresponding table information D11 table information D12 corresponding to height-discharge pressure is also referred to as table information D11, D12.

Identical with reference to Fig. 2 explanation carried out with aforementioned, motor control part 21 controls driving or the stopping of the rotation of wiper motor 14 when rain brush switch 31 is ON or OFF according to motor control signal.It addition, motor control part 21 controls the reciprocating action of Wiper arm 11 according to motor control signal.Further, motor control part 21 controls the stream switching of injection direction switching part 13c according to motor control signal.

Nozzle height test section 22 shown in Figure 23 detects nozzle height H.As shown in (a) or (b) of Figure 22, this nozzle height H is height H1c or H1k between position Lc or Lk of the jet of the position L1 of outlet of the cleanout fluid cleaning pump 16 and washer jet 13.This nozzle height H1c or H1k carries out often changing in the process of reciprocating action at arm 11.Additionally, in (a) and (b) of Figure 22, for each nozzle height H1c, H1k, be illustrated the state with the water-head represented by H Δ as one.

Height (being called variation height) Hc, the Hk of the variation that nozzle height H1c or H1k can be divided between position Lc or Lk of the axle of level altitude (the being called height of foundation) H1 between the position L1 of the outlet of pump 16 and the axle of arm rearward end 11a and arm rearward end 11a and the jet of nozzle 13.

Illustrating further, the nozzle height H of variation changes as follows.Such as when arm 11 shows action, as shown in (a) of Figure 22, when the position of the jet of nozzle 13 is Lk, the variation of the position Lk from the axle of arm rearward end 11a to the jet of nozzle 13 highly becomes Hk.In this case, the aggregate value of this variation height Hk and height of foundation H1 becomes nozzle height H1k.When arm 11 swings back action, as shown in (b) of Figure 22, when the position of the jet of nozzle 13 is Lc, the variation of the position Lc from the axle of arm rearward end 11a to the jet of nozzle 13 highly becomes Hc.In this case, the aggregate value of this variation height Hc and height of foundation H1 becomes nozzle height H1c.

At this, owing to the length of arm 11 is fixing, so only it is to be understood that the operating angle of arm 11 (being called arm angle, θ), the variation from the axle of arm rearward end 11a to the jet of nozzle 13 shown in (a) and (b) height Hc, Hk of Figure 22 just can be tried to achieve by trigonometric function.By being added with height of foundation H1 by this variation height Hc or Hk, try to achieve nozzle height H1c or H1k.Thus, the relation of arm angle, θ and nozzle height H by carry out measurement in advance and as of fig. 24 angle-height correspondence mappings figure (also referred to as mapping graph) set like that.

Figure 24 is the angle-height correspondence mappings figure representing arm angle, θ and the corresponding relation of nozzle height H with diagram curve G11, wherein, transverse axis illustrates arm angle with 1 degree of (minimum angles)～θ 1m degree (maximum angle) of θ, and with H1 (minimum constructive height)～H1m (maximum height), nozzle height is shown on the longitudinal axis.The arm angle, θ of this mapping graph represents with data value in the angle shown in Figure 23-highly corresponding table information D11 with the corresponding relation of nozzle height H.

Nozzle height test section 22 is when detecting nozzle height H, convert the anglec of rotation M θ of the rotating shaft of the wiper motor 14 detected by rotational angle detecting sensor 14a to arm angle, θ, and by the arm angle, θ after this switching suitable in table information D11, thus detect nozzle height H.

But, here for being easy to illustrate, describe the situation consistent with arm angle, θ for anglec of rotation M θ of motor 14.Such as, relative to horizontal line, if the operating angle of the arm of linearity 11 (arm angle, θ) is 0 degree of (minimum angles)～90 degree (maximum angle), then the anglec of rotation M θ of motor 14 also becomes between 0 degree～90 degree, by making motor 14 alternately positive and negative rotation between this 0 degree～90 degree, and arm 11 is made to move back and forth.

The nozzle height H detected by nozzle height test section 22 as mentioned above inputs to pump control portion 23D.

Pump 16 is controlled by pump control portion 23D by pump control signal, so that cleaning pump 16 by being discharged to pipe 18 (Figure 21) by the cleanout fluid in case 15 with discharge pressure (also referred to as the pump discharge head) P corresponding for nozzle height H inputted.

Pump control signal is such as pwm control signal.By changing the dutycycle of this pwm control signal, and the element of pump 16 and the rotating speed of motor (not shown) are carried out variable control, and the discharge pressure (pump discharge head P) of pump 16 can be made variable.When making pump discharge head P increase, the dutycycle of pwm control signal uprises, and when pump discharge head P step-down, dutycycle reduces.

The relation of nozzle height H and pump discharge head P height-discharge pressure correspondence mappings figure (also referred to as mapping graph) as shown in figure 25 sets like that.Figure 25 illustrates nozzle height H with H1 (minimum constructive height)～H1m (maximum height) on transverse axis, and illustrates pump discharge head P with P1 (minimum discharge pressure)～P1m (MDP) on the longitudinal axis.Further, the relation of nozzle height H and pump discharge head P is such as shown in diagram curve G12, with no matter, the height of nozzle height H how, all makes the emitted dose from the cleanout fluid of nozzle 13 injection limit pump discharge head P in the way of becoming fixing (such as the emitted dose by the 1.5cc/ second is set to fix).The emitted dose of fixing cleanout fluid can arbitrarily change.In the mapping graph of Figure 25, nozzle height H and the corresponding relation of pump discharge head P represent with data value in the corresponding table information D12 of height-discharge pressure.

Illustrate further, the relation of the nozzle height H represented by diagram curve G12 and pump discharge head P, represents so that how the height regardless of nozzle height H all makes the emitted dose of the cleanout fluid from washer jet 13 injection make the pump discharge head P relation increased and decreased according to the height of nozzle height H for fixing mode.That is, based on this diagram curve G12, by the pump control portion 23D shown in Figure 23 so that low with nozzle height H time compared with, make the mode uprised of pump discharge head P during nozzle height H height control pump discharge head P so that the emitted dose from the cleanout fluid of nozzle 13 is fixing.By this control, from the emitted dose of the cleanout fluid of nozzle 13 injection regardless of how the high and low position of nozzle 13 all becomes fixing.

Therefore, nozzle height test section 22 the nozzle height H that detects suitable in table information D12, is tried to achieve pump discharge head P by pump control portion 23D.Afterwards, the discharge pressure of pump 16 is controlled by pump control portion 23D according to pump control signal, to become the pump discharge head P tried to achieve.By this control, pump 16 sucks cleanout fluid with pump discharge head P from case 15 and discharges to pipe 18 (Figure 21).The cleanout fluid being discharged to this pipe 18 passes through from pipe 18 and sprays to glass 2 from nozzle 13 with the emitted dose of the such as 1.5cc/ second of fixed amount.

In addition, can also by corresponding with height-discharge pressure for corresponding for angle-highly table information D11 table information D12 synthesis one, its for the arm angle, θ shown in Figure 24 is taken as transverse axis, the pump discharge head P shown in Figure 25 is taken as the corresponding table information of angle-discharge pressure that the mapping graph of the longitudinal axis is corresponding.Pump control portion 23D uses this angle-discharge pressure correspondence table information to try to achieve pump discharge head P.In this case, it is not necessary to nozzle height test section 22, rotational angle detecting sensor 14a the anglec of rotation M θ detected is input to pump control portion 23D.Pump control portion 23D use angle-discharge pressure correspondence table information tries to achieve pump discharge head P from the arm angle, θ corresponding for anglec of rotation M θ inputted.

The control (being called fixing control) how being all set to the emitted dose of the cleanout fluid sprayed from this nozzle 13 fix regardless of the high and low position of nozzle 13 also carries out when cleaning switch 32 is for ON.

Generally, if cleaning switch 32 is ON, then pump 16 works and from nozzle 13 jet cleaning liquid.Meanwhile, by wiper motor 14, arm 11 is back and forth driven, and Wiper blade 12 carries out the reciprocating action of stipulated number (such as three times) at the upper surface of glass 2.Jet cleaning liquid in this three reciprocating actions.

In the present embodiment, when sheet 12 carries out three reciprocating action, by using the pump control portion 23D of the motor control signal from motor control part 21 and the nozzle height H from nozzle height test section 22 to carry out above-mentioned fixing control.Namely, pump control portion 23D is with compared with low with nozzle height H (with reference to (b) of Figure 22), the mode uprised of pump discharge head P during nozzle height H high ((a) with reference to Figure 22) is made to control pump discharge head P so that from the emitted dose of the cleanout fluid of nozzle 13 injection regardless of how the height of nozzle height H is all fixing.

<action of the 3rd embodiment>

Then, with reference to the flow chart shown in Figure 26, the 19B control that the discharge pressure cleaning pump 16 is carried out in control portion is described.

In step s 11, when rain brush switch 31 is set to ON, wiper motor 14 is alternately switched to rotate forward and reversely rotate while it is rotated driving by motor control part 21 according to motor control signal, so that Wiper arm 11 reciprocating action.Now, the Wiper blade 12 on arm 11 and washer jet 13 also reciprocating action integratedly it are arranged on.Now, cleaning switch 32 is set to ON and pump 16 works and from the situation of nozzle 13 jet cleaning liquid as premise.

In addition, using following situation as premise, that is, it is set to ON and from while nozzle 13 jet cleaning liquid at cleaning switch 32, carries out arm 11 back and forth driving by motor 14, sheet 12 carries out reciprocating action and the jet cleaning liquid of stipulated number at the upper surface of glass 2.

If arm 11 carries out reciprocating action, then in step s 12, nozzle height test section 22 converts the anglec of rotation M θ of the motor 14 detected by rotational angle detecting sensor 14a to arm angle, θ, and by the arm angle, θ after this conversion suitable in table information D11 (Figure 24), thus detect nozzle height H.

Such as, when arm 11 shows action, as shown in (a) of Figure 22, when the position of the jet of nozzle 13 is Lk, variation is highly Hk.In this case, by this variation height Hk is detected nozzle height H1k with height of foundation H1 phase Calais.On the other hand, when arm 11 swings back action, as shown in (b) of Figure 22, when the position of the jet of nozzle 13 is Lc, variation is highly Hc.In this case, by this variation height Hc is detected nozzle height H1c with height of foundation H1 phase Calais.Here for the nozzle height H1k shown in (a) of detection Figure 22.This nozzle height H1k inputs to pump control portion 23D.

Then, in step s 13, the nozzle height H1k that inputs suitable in height-discharge pressure correspondence table information D12 (Figure 25), is tried to achieve pump discharge head P1k by pump control portion 23D.Afterwards, in step S14, the discharge pressure of pump 16 is controlled by pump control portion 23D according to pump control signal, to become the pump discharge head P1k tried to achieve.

By this control, in step S15, pump 16 sucks cleanout fluid with pump discharge head P1k from case 15 and discharges to pipe 18.The cleanout fluid being discharged to this pipe 18 sprays to front screen 2 from nozzle 13 with the emitted dose of the such as 1.5cc/ second of fixed amount.

But, Wiper arm 11 can also be by including the up and down reciprocatingly actuating mechanism (not shown) of wiper motor 14 and between the upper end and bottom of glass 2 structure of reciprocating action along the vertical direction.In this case, Wiper blade 12 and washer jet 13 too with arm 11 reciprocating action integratedly.

<effect of the 3rd embodiment>

The cleaning injection apparatus 10B of the 3rd embodiment described above possesses: the Wiper blade 12 of the glass for vehicle window on vehicle 1 and front screen 2 is located in wiping；The Wiper arm 11 of supporting Wiper blade 12；As the wiper motor 14 making Wiper arm 11 driving mechanism of displacement at least in the vertical direction；Washer jet 13 to glass for vehicle window jet cleaning liquid；The cleaning pump 16 of cleanout fluid is supplied to washer jet 13；Control portion 19B with the controlling organization as the discharge pressure controlling cleaning pump 16.

3rd embodiment is characterised by, nozzle 13 is located on sheet 12 or arm 11, and control portion 19B controls the discharge pressure of pump 16 so that compared with when the position of arm 11 is low, and the discharge pressure of the pump 16 when making position height uprises.

By this structure, the height of nozzle 13 is more high, and the discharge pressure of pump 16 more can be made to uprise.Therefore, the height and position of the nozzle 13 no matter being located on arm 11 how, can spray the cleanout fluid of ormal weight.Thus, even if nozzle 13 is on high position, the wiping effect of glass 2 also can be made to improve.

Further, since the more high discharge pressure more making pump 16 of the height of nozzle 13 uprises, it is possible to avoid the minimizing of cleanout fluid or the increase that cause because of the high and low position of nozzle 13.Thereby, it is possible to suppress or prevent the reduction of wiping properties of glass 2 and the wasteness consumption of cleanout fluid.

Additionally, when being controlled in the way of uprising when control portion 19B is lower than the position of Wiper arm 11 in time making the discharge pressure of the cleaning pump 16 position height at Wiper arm 11, control portion 19B with on the equidirectional of the reciprocating action of Wiper arm 11, makes the mode that the emitted dose of the cleanout fluid ejected from washer jet 13 becomes fixed amount be controlled.

By this structure, no matter the height of washer jet 13 how, the emitted dose of cleanout fluid can be set to fixed amount.Thus, as long as the fixed amount of the emitted dose of cleanout fluid is set as with necessary Min., front screen 2 to be carried out the amount of best wiping, just while the wiping properties making glass 2 uprises, can suppress or prevent the wasteness consumption of cleanout fluid further.

<structure of the 4th embodiment>

Figure 27 indicates that the block diagram in the control portion cleaning injection apparatus in the 4th embodiment of the present invention.But, in the control portion 19C shown in Figure 27, mark identical accompanying drawing labelling to the part identical for control portion 19B shown in Figure 23 of the 3rd embodiment, and the description thereof is omitted as appropriate.

The difference of the control portion 19B of control portion 19C and the three embodiment shown in Figure 27 is in that, pump control portion 23E is so that the discharge pressure (pump discharge head P) cleaning pump 16 is controlled (being called that high discharge pressure controls) when Wiper arm 11 shows action than the mode uprised when this Wiper arm swings back action.

But, in the reciprocating action of arm 11, when showing action, go journey side nozzle 13a upwards to spray cleanout fluid, and when swinging back action, backhaul side nozzle 13b Jet with downward flow direction cleanout fluid.Therefore, if being set to identical by pump discharge head P in the reciprocating action both sides of arm 11, then the emitted dose of cleanout fluid reduces than when swinging back action when showing action, or cannot remove jet cleaning liquid on the wiping desired position of journey side for front screen 2.Thus, when showing action, it is possible to the unfavorable condition such as wiping properties reduction that can cause glass 2.

Then, if pump control portion 23E carries out high discharge pressure control, even if also then be able to spray the cleanout fluid of suitable emitted dose on appropriate location the wiping properties reduction as being not result in glass 2 when showing action.Now, for with when showing action highly identical swing back action time backhaul side nozzle 13b, although pump discharge head P step-down compared with when showing action, but due to be towards lower section spray, it is possible to the emitted dose of the cleanout fluid needed for guaranteeing wiping, and can spray to for wiping desired position.

In order to carry out high discharge pressure control, pump control portion 23E possesses height-discharge pressure correspondence table information (also referred to as table information) D13, on the basis from the nozzle height H of nozzle height test section 22, also use the motor control signal of motor control part 21, carry out the control of discharge pressure to pump 16 as described belowly.

Nozzle height H and pump discharge head P in height-discharge pressure correspondence mappings figure (also referred to as mapping graph) shown in highly-discharge pressure correspondence table information D13 data value table diagram 28, the relation that is associated respectively through two diagram curve G13a, G13b.Mapping graph shown in Figure 28 illustrates nozzle height H with H1 (minimum constructive height)～H1m (maximum height) on transverse axis, and illustrates pump discharge head P becoming big Pbc, Pac, Pbk, Pak, Pbm, Pam (MDP) successively from P1 (minimum discharge pressure) on the longitudinal axis.

Diagram curve G13a shown in Figure 28 represents the relation of nozzle height H1～H1m when arm 11 shows action and pump discharge head P1, Pac, Pak, Pam.When this pass ties up to nozzle height H1～H1m, represent from the discharge pressure P1 of pump 16 when removing journey side nozzle 13a jet cleaning liquid, Pac, Pak, Pam.

Diagram curve G13b represents the relation of nozzle height H1～H1m when arm 11 swings back action and pump discharge head P1, Pbc, Pbk, Pbm.When this pass ties up to nozzle height H1～H1m, the discharge pressure P1 of pump 16 when representing from backhaul side nozzle 13b jet cleaning liquid, Pbc, Pbk, Pbm.

At this, pump discharge head P when showing action is called journey side pump discharge head Pa, pump discharge head P when swinging back action is called backhaul side pump discharge head Pb.

From each diagram curve G13a, G13b it can be seen that on this nozzle height H1～H1m, go journey side pump discharge head P1, Pac, Pak, Pam higher than backhaul side pump discharge head P1, Pbc, Pbk, Pbm.So, it is set as on this nozzle height H, from going the emitted dose of the journey side nozzle 13a cleanout fluid sprayed more from the emitted dose of the cleanout fluid of backhaul side nozzle 13b injection than when swinging back action when showing action.

Such as, the slope of diagram curve G13b when swinging back action is " 1 ", and the slope of diagram curve G13a when showing action is " 1.2 ".Further, in this case, in the nozzle height H1～H1m represented by diagram curve G13b when the swinging back action relation with backhaul side pump discharge head P1, Pbc, Pbk, Pbm, it is set to the 1.5cc/ second of fixed amount from the emitted dose of the cleanout fluid of backhaul side nozzle 13b injection.In this case, in the nozzle height H1～H1m represented by diagram curve G13a when showing action and the relation removing journey side pump discharge head P1, Pac, Pak, Pam, from emitted dose 1.8cc/ second {=(1.5cc/ the second) × 1.2} up to fixed amount removing the journey side nozzle 13a cleanout fluid sprayed.

Be back to Figure 27, pump control portion 23E to the motor control signal from motor control part 21 rotate forward control or reversely rotate control detect.If this testing result rotates forward control, then judge that arm 11 is as showing in course of action, and select from table information D13 with reference to the nozzle height H represented by diagram curve G13a (Figure 28) and the relation removing journey side pump discharge head Pa.

Afterwards, identically with the 3rd embodiment, nozzle height test section 22 the nozzle height H detected suitable in the relation of the diagram curve G13a of the table information D13 selected before, is tried to achieve journey side pump discharge head Pa by pump control portion 23E.Such as, if the H1k shown in nozzle height H Figure 28, then pump discharge head Pak is tried to achieve via diagram curve G13a.Then, the discharge pressure of pump 16 is controlled by pump control portion 23E so that it is become try to achieve remove journey side pump discharge head Pak.

On the other hand, pump control portion 23E is when detecting that from motor control signal reverse rotation controls, judge that arm 11 is as swinging back in course of action, and the relation of the selection nozzle height H that reference is represented by diagram curve G13b from table information D13 and backhaul side pump discharge head Pb.

Afterwards, nozzle height test section 22 the nozzle height H that detects suitable in the relation of the diagram curve G13b of table information D13 selected before, is tried to achieve backhaul side pump discharge head Pb by pump control portion 23E.Such as, if the H1c shown in nozzle height H Figure 28, then pump discharge head Pbc is tried to achieve via diagram curve G13b.The discharge pressure of pump 16 is controlled by pump control portion 23E so that it is become the backhaul side pump discharge head Pbc tried to achieve.

<action of the 4th embodiment>

Then, with reference to the flow chart shown in Figure 29, the 19C control that the discharge pressure cleaning pump 16 is carried out in control portion is described.But in the flow chart shown in Figure 29, suitably omit the explanation of the content identical with the flow chart shown in Figure 26 of the 3rd embodiment.

In the step s 21, with aforesaid step S11 (Figure 26) in the same manner, by the reciprocal driving of the motor 14 corresponding with the motor control signal of motor control part 21, arm 11 and sheet 12 and nozzle 13 reciprocating action integratedly are made.Now, using from the situation of nozzle 13 jet cleaning liquid as premise.

By the reciprocating action of this arm 11, in step S22, with aforesaid step S12 (Figure 26) in the same manner, nozzle height test section 22 detects nozzle height H.At this, detection nozzle height H1k or H1c{ is with reference to (a) or (b) of Figure 22 }, and export to pump control portion 23E.

Then, in step S23, pump control portion 23E to the motor control signal from motor control part 21 rotate forward control or reversely rotate control detect, in step s 24, it is judged that arm 11 is in showing in course of action and still swings back in course of action.Control lower to show in course of action if rotating forward, then entrance step S25；Control lower to swing back in course of action if reversely rotating, then entrance step S29.

If showing in course of action, then in step s 25, pump control portion 23E selects the relation of diagram curve G13a (with reference to Figure 28) when showing action from table information D13.

Then, in step S26, above-mentioned steps S22 the nozzle height H1k detected suitable in the relation of diagram curve G13a when showing action shown in the Figure 28 selected by above-mentioned steps S25, is tried to achieve journey side pump discharge head Pak by pump control portion 23E.

Then, in step s 27, the discharge pressure of pump 16 is controlled by pump control portion 23E so that it is becomes and is removed journey side pump discharge head Pak by what above-mentioned steps S26 tried to achieve.

By this control, in step S28, pump 16 is to control to go journey side pump discharge head Pak suck cleanout fluid from case 15 and discharge to pipe 18.It is discharged to the cleanout fluid of this pipe 18 fixed amount with the such as 1.8cc/ second from going journey side nozzle 13a to spray to front screen 2.

On the other hand, if the judgement of above-mentioned steps S24 is for swinging back in course of action, then in step S29, pump control portion 23E selects the relation of diagram curve G13b (Figure 28) when swinging back action from table information D13.

Then, in step s 30, the nozzle height H1c detected by above-mentioned steps S22 suitable in the relation of the diagram curve G13b (Figure 28) when swinging back action selected by above-mentioned steps S29, is tried to achieve backhaul side pump discharge head Pbc by pump control portion 23E.

Then, in step S31, the discharge pressure of pump 16 is controlled by pump control portion 23E so that it is become the backhaul side pump discharge head Pbc tried to achieve by above-mentioned steps S30.

By this control, in step S28, pump 16 sucks cleanout fluid from case 15 to control backhaul side pump discharge head Pbc and discharges to pipe 18, and by this discharge, cleanout fluid sprays to front screen 2 from backhaul side nozzle 13b with the fixed amount of such as 1.5cc/ second.

<effect of the 4th embodiment>

The washer jet 13 cleaning injection apparatus 10B of the 4th embodiment described above possess when Wiper arm 11 shows action injection go journey side nozzle 13a and when arm 11 swings back action the backhaul side nozzle 13b of injection.And, as the control portion 19C of controlling organization to make the discharge pressure of cleaning pump 16 be controlled than in the way of uprising when arm 11 swings back action when arm 11 shows action.

By this structure, although go journey side nozzle 13a towards top jet cleaning liquid when arm 11 shows action, but owing to the discharge pressure ratio arm 11 of pump 16 can be made to uprise when swinging back action, it is possible to the cleanout fluid of the amount needed for spraying for wiping on the appropriate location avoiding the wiping properties of front screen 2 to reduce.Thus, the wiping effect that also can make glass 2 when arm 11 shows action improves.

It addition, discharge pressure ratio when although arm 11 swings back action shows step-down during action, but owing to being spray towards lower section, it is possible to the cleanout fluid of the amount needed for spraying for wiping on the position avoiding wiping properties to reduce.Therefore, it is possible to suppress or the reduction of wiping properties and the wasteness consumption of cleanout fluid when swinging back action when preventing from showing action.

<structure of the 5th embodiment, action>

The axonometric chart of the vehicle cleaning injection apparatus that Figure 30 is the use of in the 5th embodiment of the present invention.

As shown in figure 30, the difference of cleaning injection apparatus 10B (Figure 21) cleaning injection apparatus 10C and the three embodiment of vehicle 1 is in that, viscosity measurements sensor 17 and cleaning fluid tank 15 being disposed adjacently, control portion 19D uses nozzle height H and the viscosity [Pa s (pascal second)] of cleanout fluid that detected by viscosity measurements sensor 17 to control the discharge pressure of pump 16.Additionally, viscosity measurements sensor 17 is the testing agency described in technical scheme, also it is only called sensor 17.

Cleanout fluid causes that because of its composition viscosity is different.It addition, cleanout fluid causes viscosity B coefficent because of liquid temperature, temperature is more low, and its viscosity just becomes more high and is more difficult to flow, and temperature is more high, and its viscosity is more low and more easily flows.When sucking cleanout fluid by pump 16 from case 15 and spray from nozzle 13 via pipe 18, if viscosity is high, then will become to be difficult in pipe 18 grade and flow, and be difficult to spray from nozzle 13.In this case, the emitted dose of cleanout fluid reduces, and not for jet cleaning liquid on the wiping desired position of glass 2.Therefore, produce to cause the unfavorable condition of wiping properties reduction etc. sometimes.

Then, in the 5th embodiment, by the viscosity of the cleanout fluid in viscosity measurements sensor 17 detection case 15, by control portion 19D, the discharge pressure of pump 16 is controlled, so that it uprises than when this viscosity is low when detected viscosity height.But, viscosity measurements sensor 17 can also detect the composition of cleanout fluid, and tries to achieve viscosity from the corresponding relation of the variations in temperature corresponding with this composition and viscosity B coefficent.

The difference in control portion 19B (Figure 23) of control portion 19D and the three embodiment is in that, pump control portion 23F shown in Figure 31 tries to achieve correction value α (Figure 32) from the viscosities il detected by sensor 17, and with this correction value α, pump discharge head P (with reference to Figure 25) is modified.Pump control portion 23F is further equipped with viscosity-correction value correspondence table information (also referred to as table information) D14.

The viscosities il of the cleanout fluid in the viscosity-correction value correspondence mappings figure (also referred to as mapping graph) shown in viscosity-correction value correspondence table information D14 data value table diagram 32 and correction value α, by the diagram curve G14 relation being associated.This figure illustrates viscosities il with the η d uprised successively from η a, η j, η n on transverse axis, and on the longitudinal axis to become big α d successively from α a, α j, α n illustrate correction value α.

Nozzle height H suitable in table information D12, is tried to achieve pump discharge head P by the pump control portion 23F shown in Figure 31.Further, the viscosities il of the cleanout fluid detected by sensor 17 is tried to achieve correction value α by pump control portion 23F suitable in table information D14, this correction value α is multiplied with the pump discharge head P tried to achieve before, tries to achieve correction pump discharge head P η (P η is not shown).And, the discharge pressure of pump 16 is controlled by pump control portion 23F according to the pump control signal comprising the information revising pump discharge head P η so that it is become this correction pump discharge head P η.

In this, it is assumed that the viscosities il j shown in Figure 32 is the normal viscosity of cleanout fluid, and the correction value α j corresponding with this viscosities il j is " 1 ".Now, it is assumed that be " 1.3 " with the correction value α n corresponding for viscosities il n flowed higher than normal viscosity η j and being difficult to, and with lower than normal viscosity η j and hold correction value α d corresponding for runny viscosities il d for " 0.8 ".

In this case, if being detected viscosities il n by viscosity measurements sensor 17, then pump control portion 23F is by viscosities il n suitable in table information D14, tries to achieve correction value α n=" 1.3 ".Further, pump control portion 23F by correction value " 1.3 " with by the pump discharge head (such as the P1k shown in Figure 25) that nozzle height H tries to achieve suitable in table information D12 is multiplied, try to achieve correction pump discharge head P η=" P1k × 1.3 ".And, the discharge pressure of pump 16 is controlled by pump control portion 23F so that it is become this correction pump discharge head " P1k × 1.3 ".

By this control, the discharge pressure of pump 16 uprises into " P1k × 1.3 " from " P1k ".Therefore, even if the viscosities il of cleanout fluid is above normal viscosity η j and is difficult to the viscosities il n flowed, also can pass through pump 16 and suck cleanout fluid from case 15, and suitably spray from nozzle 13 via pipe 18.

On the other hand, the viscosities il of the cleanout fluid in case 15 is the viscosities il d lower than normal viscosity η j (Figure 32), in this case, viscosity measurements sensor 17 detects viscosities il d.Viscosities il d suitable in table information D14, is tried to achieve correction value α n=" 0.8 " by pump control portion 23F.Further, pump control portion 23F by this correction value " 0.8 " with by the pump discharge head (such as P1k) that nozzle height H obtains suitable in table information D12 is multiplied, try to achieve correction pump discharge head P η=" P1k × 0.8 ".And, the discharge pressure of pump 16 is controlled by pump control portion 23F so that it is become this correction pump discharge head " P1k × 0.8 ".

By this control, the discharge pressure of pump 16 reduces into " P1k × 0.8 " from " P1k ".In this case, owing to the viscosities il d of cleanout fluid lower than normal viscosity η j and easily flows, even if so reducing the discharge pressure of pump 16, also suitably can spray from nozzle 13 via pipe 18.

<effect of the 5th embodiment>

The injection apparatus 10C that cleans of the 5th embodiment described above is also equipped with the viscosity measurements sensor 17 of testing agency of the viscosity as detection cleaning fluid tank 15 cleaning liquid inside, and pump control portion 23F is controlled than in the way of uprising when this viscosity is low when the viscosities il height detected by viscosity measurements sensor 17 making the discharge pressure of cleaning pump 16.

By this structure, it is possible to arrange the pump discharge head P (revising pump discharge head P η) of the best according to the height of the viscosity of cleanout fluid.That is, when the viscosity height of cleanout fluid, although cleanout fluid is difficult to flow, but by uprising the discharge pressure of pump 16, it is possible to front screen 2 jet cleaning liquid in appropriate amount.Thereby, it is possible to suppress or prevent the reduction of wiping properties.

On the other hand, when the viscosity of cleanout fluid is low, even if the discharge pressure of pump 16 is low, cleanout fluid also can suitably flow to nozzle 13 from case 15 and spray.Therefore, when the viscosity of cleanout fluid is low, by reducing the discharge pressure of pump 16, it is possible to suppress or prevent the wasteness consumption of cleanout fluid, further, moreover it is possible to suppress the driving electric of pump 16.

The control of pump discharge head P can also be equally applicable to the pump control portion 23E of the 4th embodiment by the pump control portion 23F cleaning injection apparatus 10C of the 5th embodiment.In this case, viscosity measurements sensor 17 viscosities il of the cleanout fluid detected is multiplied is modified with removing journey side pump discharge head Pa or backhaul side pump discharge head Pb.

<variation 4>

As shown in figure 33, Wiper arm 11 and Wiper blade 12 and washer jet 13 are integratedly from substantially horizontal arrangement and start position T10 to reciprocating action between substantially vertical position and final position T13.Now, from removing journey side nozzle 13a or backhaul side nozzle 13b jet cleaning liquid.But, cleanout fluid can be caused when arm 11 shows action to splash outside front screen 2 at final position T13 jet cleaning liquid, therefore, cleanout fluid can be wasted.

Furthermore, it is understood that near the terminal close to the T13 of final position, position T12 is to terminal between the T13 of position, the length of glass 2 is very short, and cleanout fluid nearly all can splash outside glass 2.Therefore, near terminal after the T12 of position, jet cleaning liquid can cause the waste of cleanout fluid as before.

This it is wasted near start position T10 and starting point to occur too between the T11 of position.

Then, in the pump control portion 23F shown in pump control portion 23E, the Figure 31 shown in pump control portion 23D, the Figure 27 shown in Figure 23, according to the arm angle, θ by nozzle height test section 22 gained, as described later pump discharge head P is controlled such that it reduces.At this, enumerating the pump control portion 23D shown in Figure 23 is that representative illustrates.It addition, in the reciprocating action of arm 11, to go to journey side to illustrate for representative.

Pump control portion 23D such as when arm 11 shows action according to the position being carried out detection arm 11 by the arm angle, θ of nozzle height test section 22 gained.Reach home from the position of the arm 11 of this detection neighbouring position T12, be controlled making it gradually decrease to pump discharge head P, become " 0 " when reaching home position T13.Additionally, except " 0 ", it is also possible to for the value close to " 0 ", by the injection time started of the cleanout fluid of following backhaul side in advance.

According to this control, from going the journey side nozzle 13a cleanout fluid sprayed to gradually decrease from position T12 near terminal, then not fill-before-fire during to final position T13.

Illustrating further, near terminal, position T12 refers in the ideal case from the distance going the splashing of the journey side nozzle 13a cleanout fluid sprayed to arrive final position T13.Therefore, pump control portion 23D is preferably, near terminal after the T12 of position, along with going journey side nozzle 13a's to show action, to make the mode that cleanout fluid more reduces the closer to final position T13 emitted dose control pump discharge head P.

By this control, it is possible to suppressing or while the waste of elimination cleanout fluid, suitably wiping front screen 2.

In addition, pump discharge head P can also be controlled by pump control portion 23D when arm 11 shows action so that it is becomes " 0 " when arm angle, θ reaches home position T13.

Claims (13)

1. a cleaning injection apparatus, it is characterised in that possess:

Washer jet to the glass for vehicle window jet cleaning liquid of vehicle；

The cleaning pump of cleanout fluid is supplied to described washer jet；

Detect the temperature of described cleanout fluid and the testing agency of liquid temperature；With

Control the controlling organization of the discharge pressure of described cleaning pump,

Described controlling organization controls the discharge pressure of described cleaning pump so that compared with during with the liquid temperature height detected by described testing agency, the discharge pressure of described cleaning pump when making liquid temperature low uprises.

2. cleaning injection apparatus according to claim 1, it is characterized in that, when described liquid temperature becomes below predetermined threshold temperature, described controlling organization discharge pressure when liquid temperature described in the discharge pressure ratio making described cleaning pump is in a ratio of high temperature with described threshold temperature is controlled in the way of increasing.

3. a cleaning injection apparatus, it is characterised in that possess:

Washer jet to the glass for vehicle window jet cleaning liquid of vehicle；

The cleaning pump of cleanout fluid is supplied to described washer jet；

Obtain mechanism, its obtain the temperature of electromotor in the engine room of external air temperature of described vehicle, described vehicle and engine temperature and from cleaning fluid tank to the neighbouring temperature of the stream of described washer jet arbitrary temperature；With

Control the controlling organization of the discharge pressure of described cleaning pump,

Described controlling organization controls the discharge pressure of described cleaning pump so that compared with during by the described temperature height obtaining mechanism's acquirement, the discharge pressure of described cleaning pump when making temperature low uprises.

4. cleaning injection apparatus according to claim 3, it is characterised in that described acquirement mechanism obtains described external air temperature,

When the external air temperature of described acquirement becomes below specific external air temperature set in advance, described controlling organization discharge pressure when external air temperature described in the discharge pressure ratio making described cleaning pump is in a ratio of high temperature with described specific external air temperature is controlled in the way of increasing.

5. cleaning injection apparatus according to claim 4, it is characterised in that described acquirement mechanism obtains described external air temperature and described engine temperature,

When the external air temperature of described acquirement become the engine temperature of below described specific external air temperature and described acquirement be more than specific engines temperature set in advance time, be controlled in the way of the discharge pressure reduction when engine temperature described in the discharge pressure ratio making described cleaning pump and described specific engines temperature are in a ratio of low temperature of the described controlling organization.

6. cleaning injection apparatus according to claim 4, it is characterised in that described acquirement mechanism obtains described external air temperature and described neighbouring temperature,

When the external air temperature of described acquirement become the neighbouring temperature of below described specific external air temperature and described acquirement be set in advance specific near more than temperature time, described controlling organization near described in the discharge pressure ratio making described cleaning pump temperature with described specific near temperature be in a ratio of low temperature time discharge pressure reduction in the way of be controlled.

7. the cleaning injection apparatus according to any one of claim 1～6, it is characterised in that be also equipped with detecting the composition detection mechanism of the composition comprised in described cleanout fluid,

The described controlling organization corresponding relation according to liquid temperature and the viscosity of the cleanout fluid comprising the composition detected by described composition detection mechanism, try to achieve the viscosity of the cleanout fluid corresponding with the liquid temperature detected when this detection, when for this viscosity tried to achieve, in the way of making the discharge pressure of described cleaning pump become can to discharge the discharge pressure of the cleanout fluid to the amount needed for the suitable wiping of described glass for vehicle window, described in correction, clean the discharge pressure of pump.

8. a cleaning injection apparatus, it is characterised in that possess:

The Wiper blade of the glass for vehicle window that wiping is located on vehicle；

Support the Wiper arm of described Wiper blade；

Including the driving mechanism of motor, this motor makes the displacement at least in the vertical direction of described Wiper arm；

Washer jet to described glass for vehicle window jet cleaning liquid；

The cleaning pump of cleanout fluid is supplied to described washer jet；With

Control the controlling organization of the discharge pressure of described cleaning pump,

Described washer jet is located on described Wiper blade or described Wiper arm,

Described controlling organization controls the discharge pressure of described cleaning pump so that compared with when the position of described Wiper arm is low, and the discharge pressure of described cleanout fluid when making position height uprises.

9. cleaning injection apparatus according to claim 8, it is characterized in that, when being controlled in the way of uprising when described controlling organization is lower than the position of described Wiper arm in time making the discharge pressure of the described cleaning pump position height at described Wiper arm, described controlling organization with on the equidirectional of the reciprocating action of described Wiper arm, makes the mode that the emitted dose of the described cleanout fluid ejected from described washer jet becomes fixed amount be controlled.

10. cleaning injection apparatus according to claim 8, it is characterised in that described washer jet possess carry out when described Wiper arm shows action spraying remove journey side nozzle and carry out the backhaul side nozzle sprayed when described Wiper arm swings back action,

Described controlling organization is controlled in the way of uprising in time making the discharge pressure of described cleaning pump swing back action when described Wiper arm shows action than described Wiper arm.

11. the cleaning injection apparatus according to any one of according to Claim 8～10, it is characterised in that be also equipped with detecting the testing agency of the viscosity of described cleanout fluid,

Described controlling organization by make the discharge pressure of described cleaning pump when the viscosity height detected by described testing agency lower than this viscosity time uprise in the way of be controlled.

12. the cleaning injection apparatus according to any one of according to Claim 8～11, it is characterized in that, the position of the described controlling organization described Wiper arm before the cleanout fluid ejected from described washer jet will fly out to the outside of described glass for vehicle window, is controlled in the way of making the discharge pressure of described cleaning pump gradually decrease.

13. the cleaning injection apparatus according to any one of according to Claim 8～12, it is characterized in that, described controlling organization controls the discharge pressure of described cleaning pump in the way of making the cleanout fluid ejected from described washer jet rest on the start position of reciprocating action of described Wiper arm and final position.